Im sure this has been covered a million time already but all advise I've found on various forums doesn't seem to work for me on this occasion.
I replaced a hall / bathroom switch that was on a 'grid' system for a standard Com, L1, L2 and can't figure out the new wiring pattern.
I have attached a photo of the original switch which worked fine and the new switch - this currently lets me turn the hall light and bathroom lights on together (hall on the right, bathroom on the left as you look at it from the front) or just the bathroom by using the switch on the left as you look at it from the front.
I have not done it that often to remember what the marking was. I simply but meter on buzzer and belled out the switch, Seem to remember if you consider one hole at top to be com then two holes at bottom become L1 and L2. Of course you can reverse that and it will still work.
I only have one intermediate in whole of house, in bed room as main light can be switched either side of bed or at door.
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